In hogs,a dominant allele B results in a white belt around the body.At a separate locus,the dominant allele S causes fusion of the two parts of the normally cloven hoof resulting in a condition known as syndactyly.A belted syndactylous sow was crossed to an unbelted cloven-hoofed boar,and in the litter there were:
$25 \%$ belted syndactylous
$25 \%$ belted cloven
$25 \%$ unbelted syndactylous
$25\%$ unbelted cloven
The genotypes of the parents can best be represented as which of the following?

Question

In hogs,a dominant allele B results in a white belt around the body.At a separate locus,the dominant allele S causes fusion of the two parts of the normally cloven hoof resulting in a condition known as syndactyly.A belted syndactylous sow was crossed to an unbelted cloven-hoofed boar,and in the litter there were:
 $25 \%$ belted syndactylous
$25 \%$  belted cloven
$25 \%$ unbelted syndactylous
$25\%$ unbelted cloven 
The genotypes of the parents can best be represented as which of the following?

Quizplus · Accepted Answer

We know that the belted syndactylous sow must have the genotype B/b;S/s because she displays both the dominant traits of white belted body and syndactylous (fused) hooves. The unbelted cloven-hoofed boar must be homozygous recessive for both traits (b/b;s/s) since he displays neither dominant trait.

Looking at the offspring, we see a mix of belted and unbelted piglets with both fused and cloven hooves. This indicates that the traits segregate independently and follow Mendelian inheritance.

Therefore, the best choice is E which shows that the parents have the genotypes B/b;S/s and b/b;s/s, which would produce the observed offspring.

In Hogs,a Dominant Allele B Results in a White Belt 25%25 \%25%

In Hogs,a Dominant Allele B Results in a White Belt $25 \%$